The Light Up the World Foundation of Alberta, Canada, received The Knight Ridder Equality Award for developing white light-emitting diodes -- one of the awards presented by Applied Materials Inc. at The Tech Museum Awards: Technology Benefiting Humanity last week in San Jose, Calif.   . . .    Pierre E. Cohade, chairman of Eastman Kodak S.A. and regional business general manager for the company's Consumer Imaging Business in Europe, Africa and the Middle East and a company vice president, has left Kodak to join the Danone Groupe, a packaged water company in France.